On Mon, Jan 11, 2021 at 11:25 AM Bruce Momjian <bruce@momjian.us> wrote:
> Once you layer on all the places a global index will be worse than just
> creating a single large table, or a partitioned table with an index per
> child, there might not be much usefulness left. A POC patch might tell
> us that, and might allow us to mark it as "not wanted".
I'm confused. Of course it's true to some degree that having a global
index "defeats the purpose" of having a partitioned table. But only to
a degree. And for some users it will make the difference between using
partitioning and not using partitioning -- they simply won't be able
to tolerate not having it available (e.g. because of a requirement for
a unique constraint that does not cover the partitioning key).
--
Peter Geoghegan